diff --git a/FreeRTOS-Plus-POSIX/include/portable/bl/bl808/FreeRTOS_POSIX_portable.h b/FreeRTOS-Plus-POSIX/include/portable/bl/bl808/FreeRTOS_POSIX_portable.h
index 1022f4b..d1e94f0 100755
--- a/FreeRTOS-Plus-POSIX/include/portable/bl/bl808/FreeRTOS_POSIX_portable.h
+++ b/FreeRTOS-Plus-POSIX/include/portable/bl/bl808/FreeRTOS_POSIX_portable.h
@@ -31,7 +31,17 @@
 #ifndef _FREERTOS_POSIX_PORTABLE_H_
 #define _FREERTOS_POSIX_PORTABLE_H_
 
-/* This port uses the defaults in FreeRTOS_POSIX_portable_default.h, so this
- * file is empty. */
+/* Xuantie Toolchain defines the following types. */
+#define posixconfigENABLE_CLOCK_T                0
+#define posixconfigENABLE_CLOCKID_T              0
+#define posixconfigENABLE_MODE_T                 0
+#define posixconfigENABLE_SSIZE_T                0
+#define posixconfigENABLE_TIME_T                 0
+#define posixconfigENABLE_TIMESPEC               0
+#define posixconfigENABLE_ITIMERSPEC             0
+
+/* Hacking on GNU types */
+#define __timer_t_defined
+#define posixconfigENABLE_TIMER_T                1
 
 #endif /* _FREERTOS_POSIX_PORTABLE_H_ */